US20180069198A1 - Organic light emitting diode display device - Google Patents
Organic light emitting diode display device Download PDFInfo
- Publication number
- US20180069198A1 US20180069198A1 US15/807,112 US201715807112A US2018069198A1 US 20180069198 A1 US20180069198 A1 US 20180069198A1 US 201715807112 A US201715807112 A US 201715807112A US 2018069198 A1 US2018069198 A1 US 2018069198A1
- Authority
- US
- United States
- Prior art keywords
- layer
- electrode
- light emitting
- emitting diode
- diode display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims abstract description 43
- 238000005538 encapsulation Methods 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 181
- 239000010949 copper Substances 0.000 claims description 30
- 239000010936 titanium Substances 0.000 claims description 24
- 239000004065 semiconductor Substances 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 18
- -1 copper nitride Chemical class 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 12
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 12
- 239000011229 interlayer Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 7
- 229910016547 CuNx Inorganic materials 0.000 claims description 6
- 229910015617 MoNx Inorganic materials 0.000 claims description 6
- 229910010421 TiNx Inorganic materials 0.000 claims description 6
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 6
- GPBUGPUPKAGMDK-UHFFFAOYSA-N azanylidynemolybdenum Chemical compound [Mo]#N GPBUGPUPKAGMDK-UHFFFAOYSA-N 0.000 claims description 6
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 239000011368 organic material Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229910004205 SiNX Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920001230 polyarylate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006126 semicrystalline polymer Polymers 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
-
- H01L51/5284—
-
- H01L27/3244—
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- Embodiments relate to an organic light emitting diode display device.
- a flat panel display such as, for example, a liquid crystal display (LCD), an organic light emitting diode display (OLED), or an electrophoretic display (EPD), may include a display panel including an electric field generating electrode and an electro-optical active layer.
- the electro-optical active layer each of panels of the organic light emitting diode display, the liquid crystal display, and the electrophoretic display may include an organic emission layer, a liquid crystal layer, and particles charged with electric charges.
- the electric field generating electrode may be connected to a switching device such as, for example, a thin film transistor, to receive a data signal, and the electro-optical active layer may convert the data signal into an optical signal to display an image.
- Embodiments may be realized by providing an organic light emitting diode display device, including a flexible substrate; pixels on the flexible substrate, the pixels including an organic emission layer; a pixel definition layer between the pixels, the pixel definition layer including openings; an encapsulation layer covering the pixels; and a conductive light shielding member on the encapsulation layer, the conductive light shielding member not overlapped with the pixels, and overlapped with the pixel definition layer.
- the pixels may be in a matrix form.
- the conductive light shielding member may include a carbon black and a polymer organic material.
- a content of carbon black in the conductive light shielding member may be 30 weight % or less.
- the conductive light shielding member may be formed by an inkjet printing method.
- the conductive light shielding member may be electrically connected to a ground electrode of a pad part outside the encapsulation layer.
- Embodiments may be realized by providing an organic light emitting diode display device, including a flexible substrate; a semiconductor layer on the flexible substrate; a gate insulating layer on the semiconductor layer; a gate electrode on the gate insulating layer; an interlayer insulating layer on the gate electrode; a source electrode and a drain electrode on the interlayer insulating layer; a pixel electrode electrically connected to the drain electrode; organic emission layers on the pixel electrode and pixel definition layers between the organic emission layers, the pixel definition layers not overlapped with the organic emission layers; a common electrode on the organic emission layers and the pixel definition layers; and an encapsulation layer covering the common electrode, the gate electrode, the source electrode, and the drain electrode each being a shielding electrode having low reflection characteristics.
- Each shielding electrode may include a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed.
- Cu copper
- IZO indium zinc oxide
- Ti titanium
- Each shielding electrode may include a mixture of two or more of copper (Cu), copper nitride (CuN x ), titanium (Ti), titanium nitride (TiN x ), titanium oxide (TiO x ), molybdenum nitride (MoN x ), indium zinc oxide (IZO), and indium tin oxide (ITO).
- Cu copper
- CuN x copper nitride
- Ti titanium
- TiN x titanium oxide
- MoN x molybdenum nitride
- ITO indium tin oxide
- Each shielding electrode may be electrically connected to a ground electrode of a pad part outside the encapsulation layer.
- Embodiments may be realized by providing an organic light emitting diode display device, including an upper substrate; and a lower substrate facing the upper substrate, the lower substrate having pixels thereon, the pixels including an organic emission layer, a low reflection opaque metal layer being formed in a non-pixel area that is not overlapped with the pixels at an inner side of the upper substrate.
- the low reflection opaque metal layer may include a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed.
- Cu copper
- IZO indium zinc oxide
- Ti titanium
- the low reflection opaque metal layer may include a mixture of two or more of copper (Cu), copper nitride (CuN x ), titanium (Ti), titanium nitride (TiN x ), titanium oxide (TiO x ), molybdenum nitride (MoN x ), indium zinc oxide (IZO), and indium tin oxide (ITO).
- Cu copper
- CuN x copper nitride
- Ti titanium
- TiN x titanium oxide
- MoN x molybdenum nitride
- ITO indium tin oxide
- the organic light emitting diode display device may include an encapsulation layer covering the pixels.
- the low reflection opaque metal layer may be electrically connected to a ground electrode of a pad part outside the encapsulation layer.
- FIG. 1 illustrates a layout diagram of pixels of an organic light emitting diode display device according to an exemplary embodiment
- FIG. 2 which illustrates a cross-sectional view taken along line A-A of FIG. 1 , illustrates a diagram of a first exemplary embodiment
- FIG. 3 which illustrates a cross-sectional view taken along line A-A of FIG. 1 , illustrates a diagram of a second exemplary embodiment
- FIG. 4 which illustrates a cross-sectional view taken along line A-A of FIG. 1 , illustrates a diagram of a third exemplary embodiment.
- a layer when a layer is referred to as being “under” another layer, it can be directly under, and one or more intervening layers may also be present.
- a layer when a layer is referred to as being “between” two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present.
- FIG. 1 illustrates a layout diagram of pixels of an organic light emitting diode display device according to an exemplary embodiment
- FIG. 2 which illustrates a cross-sectional view taken along line A-A of FIG. 1 , illustrates a diagram of a first exemplary embodiment.
- an organic light emitting diode display device may include a red pixel PXr, a green pixel PXg, and a blue pixel PXb in a unit pixel PX.
- the red pixel PXr and the green pixel PXg may be positioned adjacent to each other in a horizontal direction, and the blue pixel PXb may be positioned below the red pixel PRx and the green pixel PXg.
- the red pixel PXr and the green pixel PXg may have a narrow width unlike the blue pixel PXb, and the blue pixel Pb may have a wide width corresponding widths of the red pixel PXr and the green pixel PXg and an interval between two pixels.
- Pixel arrangements in unit pixels PXs shown in FIG. 1 may be various according to an exemplary embodiment.
- the unit pixels PXs having the structure as described above may be arranged in a matrix form depending on a row and a column.
- a light shielding member 500 may be formed between neighboring unit pixels PXs.
- the light shielding member 500 may be formed of a lattice stripe pattern corresponding to a pixel definition layer 330 at a boundary part between the pixels PXs and may serve as a black matrix to help prevent leakage of light between the pixels PXs to help increase sharpness of the pixels PXs.
- the light shielding member 500 may contain a carbon black, which may be an inorganic black material, and a polymer organic material corresponding to one or a mixture of two of polyacrylate, polystyrene, and polyethylene.
- a content of the carbon black may be 30 weight % or less, a content of the polymer organic material may be 80 weight % or less, and the light shielding member 500 may be formed by an inkjet printing method.
- One pixel may include an organic emission layer 300 , a pixel electrode 190 may be positioned beneath the organic emission layer 300 , and a common electrode 270 may be positioned on the organic emission layer 300 .
- the pixel electrode 190 may be an electrode separated per pixel, and the common electrode 270 may be an electrode formed integrally in all of the pixels.
- the pixel electrode 190 may be connected to an output terminal (drain electrode 175 a ) of a thin film transistor such as a driving transistor TDR to receive an output current of the driving transistor TDR.
- the thin film transistor such as the driving transistor TDR may include a polycrystalline semiconductor layer 150 a , a gate electrode 124 a , a source electrode 173 a , and the drain electrode 175 a.
- One pixel may include a pixel capacitor CPX connected to the source electrode 173 a and the gate electrode 124 a of the driving transistor TDR.
- the pixel capacitor CPX may include a lower capacitor electrode 155 a formed of a doped polycrystalline semiconductor, an upper capacitor electrode 125 a formed of the same material as that of the gate electrode 124 a on the same layer as that of the gate electrode 124 a , and a gate insulating layer (GIL), which may be an insulating layer positioned between the lower gate electrode 155 a and the upper capacitor electrode 125 a .
- GIL gate insulating layer
- the pixel capacitor CPX may include an upper capacitor electrode 125 a and a capacitor electrode overlapped with the upper capacitor electrode 125 a with an interlayer insulating layer 180 interposed therebetween or may further include the capacitor electrode, and any one capacitor electrode may also be formed on a layer different from an illustrated layer.
- a lower substrate 110 may be a flexible substrate such as a polymer film.
- the lower substrate 110 may be formed of thermoplastic semicrystalline polymer such as, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polyethylene ether ketone (PEEK), thermoplastic amorphous polymer such as, for example, polycarbonate (PC) or polyethylene sulfonate (PES), or plastic such as, for example, polyimide (PI) or polyarylate (PAR), having relatively high heat resistance.
- thermoplastic semicrystalline polymer such as, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polyethylene ether ketone (PEEK)
- thermoplastic amorphous polymer such as, for example, polycarbonate (PC) or polyethylene sulfonate (PES)
- plastic such as, for example, polyimide (PI) or polyarylate (PAR), having relatively high heat resistance.
- a buffer layer 115 may be formed on the lower substrate 110 to help prevent invasion of, for example, moisture or oxygen.
- the buffer layer 115 may contain, for example, silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ), and may be formed as a single layer or a multilayer.
- An overcoat layer may also be formed on the buffer layer 115 to help protect the buffer layer 115 .
- the driving transistor TDR and a switching transistor TSW may be disposed on the buffer layer 115 , and may be spaced apart from each other.
- the polycrystalline semiconductor layer 150 a of the driving transistor TDR and the lower capacitor electrode 155 a which may be the doped polycrystalline semiconductor, may be formed on the buffer layer 115 .
- the polycrystalline semiconductor layer 150 a may include the source electrode 173 a and the drain electrode 175 a disposed at both edges thereof, wherein the source electrode 173 a and the drain electrode 175 a may be doped with impurities.
- the doped polycrystalline semiconductor forming the lower capacitor electrode 155 a may have characteristics of a conductor rather than characteristics of a semiconductor due high concentration doping.
- the buffer layer 115 may help block impurities from being introduced from the lower substrate into the semiconductor at the time of performing a crystallization process to form a polycrystalline semiconductor.
- the switching transistor TSW may have the same structure as that of the driving transistor TDR.
- a polycrystalline semiconductor layer 150 b may be formed on the buffer layer 115 formed on the lower substrate 110 .
- a source electrode 173 b and a drain electrode 175 b may be formed at both edges of the polycrystalline semiconductor layer 150 b.
- the polycrystalline layers 150 a and 150 b and the exposed buffer layer 115 may be covered by a first gate insulating layer 130 .
- the gate insulating layer GIL may be formed in a multilayer structure including the first gate insulating layer 130 and a second gate insulating layer 140 formed of an inorganic material or an organic material.
- the lower capacitor electrode 155 a and a gate electrode 124 b of the switching transistor TSW may be formed on the first gate insulating layer 130 .
- the upper capacitor electrode 125 a and the gate electrode 124 a of the driving transistor TDR may be formed on the second gate insulating layer 140 .
- the gate electrode 124 a may be overlapped with a portion of the polycrystalline semiconductor layer 150 a
- the upper capacitor electrode 125 a may be overlapped with the lower capacitor electrode 155 a.
- An interlayer insulating layer 180 may be formed on the gate electrode 124 a of the driving transistor TDR, the upper capacitor electrode 125 a , and the exposed second gate insulating layer 140 .
- the interlayer insulating layer 10 may be formed of an organic material or an inorganic material.
- the interlayer insulating layer 180 and the gate insulating layer GIL may expose a source region and a drain region of the polycrystalline semiconductor layer 150 a through contact holes.
- the source electrode 173 a and the drain electrode 175 a may be formed on the interlayer insulating layer 180 and in the contact hole.
- the source electrode 173 a may contact the source region of the polycrystalline semiconductor layer 150 a
- the drain electrode 175 a may contact the drain region of the polycrystalline semiconductor layer 150 a.
- a passivation layer 185 may be formed on the source electrode 173 a , the drain electrode 175 a , and the interlayer insulating layer 180 .
- the passivation layer 185 may be formed of an organic material or an inorganic material.
- the passivation layer 185 may have a contact hole formed therein to expose the drain electrode 175 a .
- the pixel electrode 190 may be formed on the passivation layer 185 and in the contact hole.
- the pixel electrode 190 may be connected to the drain electrode 175 a through the contact hole.
- a pixel definition layer (PDL) 330 may be formed in the vicinity of the pixel electrode 190 , and may include a plurality of openings corresponding to a pixel.
- the pixel definition layer 330 may be formed of a resin such as, for example, a polyacrylate or a polyimide.
- the pixel electrode 190 may be exposed in portions in which the pixel definition layer 330 is not formed, and the organic emission layer 300 may be positioned on the pixel electrode 190 .
- the organic emission layer 300 may include an emission layer (EML), may be formed of a plurality of layers including one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL), and may emit different colors depending on a kind of organic materials.
- EML emission layer
- HIL hole injection layer
- HTL hole transport layer
- ETL electron transport layer
- EIL electron injection layer
- the common electrode 270 may be formed on the organic emission layer 300 and the pixel definition layer 330 .
- the common electrode 270 may be formed of a double layer including an upper layer and a lower layer, and may have transreflective characteristics by which it reflects a portion of light thereon and transmits the other portion of the light therethrough.
- the pixel electrode 190 , the organic emission layer 300 , and the common electrode 270 may configure a light emitting device (LD) for displaying an image in the organic light emitting diode display device.
- the pixel electrode 190 may become an anode of the light emitting device, and the common electrode 270 may become a cathode of the light emitting device.
- a capping layer 410 may be formed on the common electrode 270 , and an encapsulation layer 420 may be formed on the capping layer 410 .
- the capping layer 410 may be formed over an entire surface of the common electrode 270 to help protect the common electrode 270 .
- the light shielding member 500 may be formed on one surface of the encapsulation layer 420 .
- the light shielding member 500 may be formed in a non-pixel area corresponding to the pixel definition layer 330 without being overlapped with the openings corresponding to the pixel.
- the light shielding member 500 may be electrically connected to a ground electrode 124 c of a pad part through a ground connection wiring 127 , and the light shielding member 500 may effectively shield an electromagnetic wave and static electricity generated by the organic light emitting diode display device.
- FIG. 3 which illustrates a cross-sectional view taken along line A-A of FIG. 1 , illustrates a diagram of a second exemplary embodiment.
- An organic light emitting diode display device is different from the organic light emitting diode display device according to a first exemplary embodiment only in that a shielding member 510 having a rear surface light emitting structure may be used instead of the light shielding member 500 having a front surface light emitting structure, and may have a structure of a pixel that is the same as that of the pixel of the organic light emitting diode display device according to a first exemplary embodiment.
- the same components will be denoted by the same reference numerals, and an overlapped description for the same components will be omitted.
- gate electrode 124 a , 124 b , and 124 c , source electrode 173 a and 173 b , and drain electrode 175 a and 175 b may be formed of shielding electrodes having low reflection characteristics.
- the shielding electrode may include, for example, a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed.
- the shielding electrode may be formed of a mixture of two or more of copper (Cu), copper nitride (CuN x ), titanium (Ti), titanium nitride (TiN x ), titanium oxide (TiO x ), molybdenum nitride (MoN x ), indium zinc oxide (IZO), and indium tin oxide (ITO).
- the shielding electrode may be electrically connected to the ground electrode of the pad part positioned outside the encapsulation layer, and the light electrode may effectively shield an electromagnetic wave and static electricity generated by the organic light emitting diode display device, similar to the light shielding member 500 .
- FIG. 4 which illustrates a cross-sectional view taken along line A-A of FIG. 1 , illustrates a diagram of a third exemplary embodiment.
- An organic light emitting diode display device is different from the organic light emitting diode display device according to a second exemplary embodiment only in that it may include an upper substrate and a lower substrate formed of a rigid material such as glass, and may have a structure of a pixel that is the same as that of the pixel of the organic light emitting diode display device according to a second exemplary embodiment.
- the same components will be denoted by the same reference numerals, and an overlapped description for the same components will be omitted.
- an organic light emitting diode display device may include an upper substrate 105 and a lower substrate 110 facing each other.
- the upper substrate 105 and the lower substrate 110 are transparent insulation substrates formed of, for example, glass or plastic.
- Buffer layers 115 may be formed at an inner side of the upper substrate 105 and on the lower substrate 110 , respectively.
- the buffer layer 115 may contain, for exmaple, silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ), and may be formed as a single layer or a multilayer.
- the buffer layer 115 may help prevent permeation of impurities, moisture, or external air degrading characteristics of a semiconductor and planarize a surface.
- the buffer layer 115 may also be positioned in the upper substrate 105 or the lower substrate 110 .
- the upper substrate 105 and the lower substrate 110 may have a structure in which polymer films (plastic layers) and the buffer layers are alternately stacked as a multilayer.
- a semiconductor layer 150 , a gate insulating layer (GIL), an interlayer insulating layer 180 , a passivation layer 185 , and a pixel electrode 190 may be formed on the lower substrate 110 , as in first and second exemplary embodiments.
- a pixel definition layer 330 may be formed in the vicinity of the pixel electrode 190 , and may include a plurality of openings corresponding to one pixel.
- the pixel electrode 190 may be exposed in portions in which the pixel definition layer 330 is not formed, and the organic emission layer 300 may be positioned on the pixel electrode 190 .
- a low reflection opaque metal layer 230 may be formed in a non-pixel area that is not overlapped with the organic emission layer 300 at the inner side of the upper substrate 105 .
- the low reflection opaque metal layer 230 may be formed in an area corresponding to an area in which the pixel definition layer 330 of the lower substrate 110 may be positioned. This may cover the opening of the pixel definition layer 330 since the opening may be an area in which the organic emission layer may emit light.
- the low reflection opaque metal layer 230 may include, for example, a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed.
- the low reflection opaque metal layer 230 may be formed of a mixture of two or more selected of copper (Cu), copper nitride (CuN x ), titanium (Ti), titanium nitride (TiN x ), titanium oxide (TiO x ), molybdenum nitride (MoN x ), indium zinc oxide (IZO), and indium tin oxide (ITO).
- the low reflection opaque metal layer 230 may be electrically connected to the ground electrode of the pad part positioned outside the encapsulation layer, and the low reflection opaque metal layer 230 may effectively shield an electromagnetic wave and static electricity generated by the organic light emitting diode display device.
- an organic light emitting diode display having self-light emitting characteristics may include two electrodes facing each other and an organic layer interposed between the two electrodes.
- holes injected from an anode and electrons injected from a cathode may meet each other in an emission layer to generate excitons, the excitons may emit light and may be extinguished, and light may be generated.
- An organic light emitting diode display may not require a light source unlike the liquid crystal display, and a thickness and a weight of the display panel may be decreased.
- An organic light emitting diode display may have desirable characteristics such as, for example, low power consumption, high luminance, and a high reaction speed.
- An organic light emitting diode display may also be manufactured to be bendable using a plastic substrate.
- an electromagnetic wave harmful to the human body may be generated.
- a black matrix having improved conductivity may be used.
- a rigid substrate such as glass may be used, which may not be applied to a flexible display.
- Chrome (Cr) and chrome oxide may be used, and conductivity of a conducting wire may be decreased, which may be unfavorable in shielding an electromagnetic wave.
- an organic light emitting diode display device may improve shielding performance of an electromagnetic wave by increasing conductivity using a conductive black matrix or a low-refractive metal.
- shielding performance of an electromagnetic wave may be improved even in a flexible display, and the flexible device may be utilized for a wearable device closely adhered to the human body.
- a metal material having low reflection characteristics may be used in wirings of the gate electrode, the source electrode, and the drain electrode, and an electromagnetic wave shielding effect may be maximized.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
- This is a divisional application based on pending application Ser. No. 14/805,533, filed Jul. 22, 2015, the entire contents of which is hereby incorporated by reference.
- Korean Patent Application No. 10-2015-0007457, filed on Jan. 15, 2015, in the Korean Intellectual Property Office, and entitled: “Organic Light Emitting Diode Display Device,” is incorporated by reference herein in its entirety.
- Embodiments relate to an organic light emitting diode display device.
- A flat panel display (FPD) such as, for example, a liquid crystal display (LCD), an organic light emitting diode display (OLED), or an electrophoretic display (EPD), may include a display panel including an electric field generating electrode and an electro-optical active layer. As the electro-optical active layer, each of panels of the organic light emitting diode display, the liquid crystal display, and the electrophoretic display may include an organic emission layer, a liquid crystal layer, and particles charged with electric charges. The electric field generating electrode may be connected to a switching device such as, for example, a thin film transistor, to receive a data signal, and the electro-optical active layer may convert the data signal into an optical signal to display an image.
- Embodiments may be realized by providing an organic light emitting diode display device, including a flexible substrate; pixels on the flexible substrate, the pixels including an organic emission layer; a pixel definition layer between the pixels, the pixel definition layer including openings; an encapsulation layer covering the pixels; and a conductive light shielding member on the encapsulation layer, the conductive light shielding member not overlapped with the pixels, and overlapped with the pixel definition layer.
- The pixels may be in a matrix form.
- The conductive light shielding member may include a carbon black and a polymer organic material.
- A content of carbon black in the conductive light shielding member may be 30 weight % or less.
- The conductive light shielding member may be formed by an inkjet printing method.
- The conductive light shielding member may be electrically connected to a ground electrode of a pad part outside the encapsulation layer.
- Embodiments may be realized by providing an organic light emitting diode display device, including a flexible substrate; a semiconductor layer on the flexible substrate; a gate insulating layer on the semiconductor layer; a gate electrode on the gate insulating layer; an interlayer insulating layer on the gate electrode; a source electrode and a drain electrode on the interlayer insulating layer; a pixel electrode electrically connected to the drain electrode; organic emission layers on the pixel electrode and pixel definition layers between the organic emission layers, the pixel definition layers not overlapped with the organic emission layers; a common electrode on the organic emission layers and the pixel definition layers; and an encapsulation layer covering the common electrode, the gate electrode, the source electrode, and the drain electrode each being a shielding electrode having low reflection characteristics.
- Each shielding electrode may include a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed.
- Each shielding electrode may include a mixture of two or more of copper (Cu), copper nitride (CuNx), titanium (Ti), titanium nitride (TiNx), titanium oxide (TiOx), molybdenum nitride (MoNx), indium zinc oxide (IZO), and indium tin oxide (ITO).
- Each shielding electrode may be electrically connected to a ground electrode of a pad part outside the encapsulation layer.
- Embodiments may be realized by providing an organic light emitting diode display device, including an upper substrate; and a lower substrate facing the upper substrate, the lower substrate having pixels thereon, the pixels including an organic emission layer, a low reflection opaque metal layer being formed in a non-pixel area that is not overlapped with the pixels at an inner side of the upper substrate.
- The low reflection opaque metal layer may include a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed.
- The low reflection opaque metal layer may include a mixture of two or more of copper (Cu), copper nitride (CuNx), titanium (Ti), titanium nitride (TiNx), titanium oxide (TiOx), molybdenum nitride (MoNx), indium zinc oxide (IZO), and indium tin oxide (ITO).
- The organic light emitting diode display device may include an encapsulation layer covering the pixels. The low reflection opaque metal layer may be electrically connected to a ground electrode of a pad part outside the encapsulation layer.
- Features will become apparent to those of skill in the art by describing in detail exemplary embodiments with reference to the attached drawings in which:
-
FIG. 1 illustrates a layout diagram of pixels of an organic light emitting diode display device according to an exemplary embodiment; -
FIG. 2 , which illustrates a cross-sectional view taken along line A-A ofFIG. 1 , illustrates a diagram of a first exemplary embodiment; -
FIG. 3 , which illustrates a cross-sectional view taken along line A-A ofFIG. 1 , illustrates a diagram of a second exemplary embodiment; and -
FIG. 4 , which illustrates a cross-sectional view taken along line A-A ofFIG. 1 , illustrates a diagram of a third exemplary embodiment. - Example embodiments will now be described more fully hereinafter with reference to the accompanying drawings; however, they may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey exemplary implementations to those skilled in the art.
- In the following detailed description, only certain exemplary embodiments have been shown and described, simply by way of illustration. As those skilled in the art would realize, the described embodiments may be modified in various different ways.
- Throughout the specification, unless explicitly described to the contrary, the word “comprise” and variations such as “comprises” or “comprising”, will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
- In the drawings, the thickness of layers, films, panels, regions, etc., may be exaggerated for clarity. Like reference numerals designate like elements throughout the specification. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” another element, it can be directly on the other element or intervening elements may also be present. To the contrary, it will be understood that when any element is referred to as being “directly on” another element, an element may be not present therebetween.
- Further, it will be understood that when a layer is referred to as being “under” another layer, it can be directly under, and one or more intervening layers may also be present. In addition, it will also be understood that when a layer is referred to as being “between” two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present.
- An exemplary embodiment will hereinafter be described in detail with reference to the accompanying drawings.
-
FIG. 1 illustrates a layout diagram of pixels of an organic light emitting diode display device according to an exemplary embodiment, andFIG. 2 , which illustrates a cross-sectional view taken along line A-A ofFIG. 1 , illustrates a diagram of a first exemplary embodiment. - As shown in
FIG. 1 , an organic light emitting diode display device according to an exemplary embodiment may include a red pixel PXr, a green pixel PXg, and a blue pixel PXb in a unit pixel PX. - The red pixel PXr and the green pixel PXg may be positioned adjacent to each other in a horizontal direction, and the blue pixel PXb may be positioned below the red pixel PRx and the green pixel PXg. The red pixel PXr and the green pixel PXg may have a narrow width unlike the blue pixel PXb, and the blue pixel Pb may have a wide width corresponding widths of the red pixel PXr and the green pixel PXg and an interval between two pixels. Pixel arrangements in unit pixels PXs shown in
FIG. 1 may be various according to an exemplary embodiment. - The unit pixels PXs having the structure as described above may be arranged in a matrix form depending on a row and a column.
- A
light shielding member 500 may be formed between neighboring unit pixels PXs. Thelight shielding member 500 may be formed of a lattice stripe pattern corresponding to apixel definition layer 330 at a boundary part between the pixels PXs and may serve as a black matrix to help prevent leakage of light between the pixels PXs to help increase sharpness of the pixels PXs. - The
light shielding member 500 may contain a carbon black, which may be an inorganic black material, and a polymer organic material corresponding to one or a mixture of two of polyacrylate, polystyrene, and polyethylene. A content of the carbon black may be 30 weight % or less, a content of the polymer organic material may be 80 weight % or less, and thelight shielding member 500 may be formed by an inkjet printing method. - First, structures of the pixels (red pixel (PXr), green pixel (PXg), and blue pixel (PXb)) as shown in
FIG. 2 will be described. - One pixel may include an
organic emission layer 300, apixel electrode 190 may be positioned beneath theorganic emission layer 300, and acommon electrode 270 may be positioned on theorganic emission layer 300. Thepixel electrode 190 may be an electrode separated per pixel, and thecommon electrode 270 may be an electrode formed integrally in all of the pixels. - The
pixel electrode 190 may be connected to an output terminal (drain electrode 175 a) of a thin film transistor such as a driving transistor TDR to receive an output current of the driving transistor TDR. The thin film transistor such as the driving transistor TDR may include apolycrystalline semiconductor layer 150 a, agate electrode 124 a, asource electrode 173 a, and thedrain electrode 175 a. - One pixel may include a pixel capacitor CPX connected to the
source electrode 173 a and thegate electrode 124 a of the driving transistor TDR. The pixel capacitor CPX may include alower capacitor electrode 155 a formed of a doped polycrystalline semiconductor, anupper capacitor electrode 125 a formed of the same material as that of thegate electrode 124 a on the same layer as that of thegate electrode 124 a, and a gate insulating layer (GIL), which may be an insulating layer positioned between thelower gate electrode 155 a and theupper capacitor electrode 125 a. According to an exemplary embodiment, the pixel capacitor CPX may include anupper capacitor electrode 125 a and a capacitor electrode overlapped with theupper capacitor electrode 125 a with aninterlayer insulating layer 180 interposed therebetween or may further include the capacitor electrode, and any one capacitor electrode may also be formed on a layer different from an illustrated layer. - Layer structures of a pixel area including the components as described above will be sequentially described below.
- A
lower substrate 110 may be a flexible substrate such as a polymer film. In an embodiment, thelower substrate 110 may be formed of thermoplastic semicrystalline polymer such as, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polyethylene ether ketone (PEEK), thermoplastic amorphous polymer such as, for example, polycarbonate (PC) or polyethylene sulfonate (PES), or plastic such as, for example, polyimide (PI) or polyarylate (PAR), having relatively high heat resistance. - A
buffer layer 115 may be formed on thelower substrate 110 to help prevent invasion of, for example, moisture or oxygen. Thebuffer layer 115 may contain, for example, silicon nitride (SiNx), silicon oxide (SiOx), or silicon oxynitride (SiOxNy), and may be formed as a single layer or a multilayer. An overcoat layer may also be formed on thebuffer layer 115 to help protect thebuffer layer 115. - The driving transistor TDR and a switching transistor TSW may be disposed on the
buffer layer 115, and may be spaced apart from each other. Thepolycrystalline semiconductor layer 150 a of the driving transistor TDR and thelower capacitor electrode 155 a, which may be the doped polycrystalline semiconductor, may be formed on thebuffer layer 115. - The
polycrystalline semiconductor layer 150 a may include thesource electrode 173 a and thedrain electrode 175 a disposed at both edges thereof, wherein thesource electrode 173 a and thedrain electrode 175 a may be doped with impurities. The doped polycrystalline semiconductor forming thelower capacitor electrode 155 a may have characteristics of a conductor rather than characteristics of a semiconductor due high concentration doping. Thebuffer layer 115 may help block impurities from being introduced from the lower substrate into the semiconductor at the time of performing a crystallization process to form a polycrystalline semiconductor. - The switching transistor TSW may have the same structure as that of the driving transistor TDR. A
polycrystalline semiconductor layer 150 b may be formed on thebuffer layer 115 formed on thelower substrate 110. Asource electrode 173 b and adrain electrode 175 b may be formed at both edges of thepolycrystalline semiconductor layer 150 b. - The
polycrystalline layers buffer layer 115 may be covered by a firstgate insulating layer 130. The gate insulating layer GIL may be formed in a multilayer structure including the firstgate insulating layer 130 and a secondgate insulating layer 140 formed of an inorganic material or an organic material. - The
lower capacitor electrode 155 a and agate electrode 124 b of the switching transistor TSW may be formed on the firstgate insulating layer 130. Theupper capacitor electrode 125 a and thegate electrode 124 a of the driving transistor TDR may be formed on the secondgate insulating layer 140. Thegate electrode 124 a may be overlapped with a portion of thepolycrystalline semiconductor layer 150 a, and theupper capacitor electrode 125 a may be overlapped with thelower capacitor electrode 155 a. - An interlayer insulating
layer 180 may be formed on thegate electrode 124 a of the driving transistor TDR, theupper capacitor electrode 125 a, and the exposed secondgate insulating layer 140. The interlayer insulating layer 10 may be formed of an organic material or an inorganic material. - The interlayer insulating
layer 180 and the gate insulating layer GIL may expose a source region and a drain region of thepolycrystalline semiconductor layer 150 a through contact holes. The source electrode 173 a and thedrain electrode 175 a may be formed on theinterlayer insulating layer 180 and in the contact hole. The source electrode 173 a may contact the source region of thepolycrystalline semiconductor layer 150 a, and thedrain electrode 175 a may contact the drain region of thepolycrystalline semiconductor layer 150 a. - A
passivation layer 185 may be formed on thesource electrode 173 a, thedrain electrode 175 a, and the interlayer insulatinglayer 180. Thepassivation layer 185 may be formed of an organic material or an inorganic material. Thepassivation layer 185 may have a contact hole formed therein to expose thedrain electrode 175 a. Thepixel electrode 190 may be formed on thepassivation layer 185 and in the contact hole. Thepixel electrode 190 may be connected to thedrain electrode 175 a through the contact hole. - A pixel definition layer (PDL) 330 may be formed in the vicinity of the
pixel electrode 190, and may include a plurality of openings corresponding to a pixel. Thepixel definition layer 330 may be formed of a resin such as, for example, a polyacrylate or a polyimide. Thepixel electrode 190 may be exposed in portions in which thepixel definition layer 330 is not formed, and theorganic emission layer 300 may be positioned on thepixel electrode 190. Theorganic emission layer 300 may include an emission layer (EML), may be formed of a plurality of layers including one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL), and may emit different colors depending on a kind of organic materials. - The
common electrode 270 may be formed on theorganic emission layer 300 and thepixel definition layer 330. Thecommon electrode 270 may be formed of a double layer including an upper layer and a lower layer, and may have transreflective characteristics by which it reflects a portion of light thereon and transmits the other portion of the light therethrough. - The
pixel electrode 190, theorganic emission layer 300, and thecommon electrode 270 may configure a light emitting device (LD) for displaying an image in the organic light emitting diode display device. Thepixel electrode 190 may become an anode of the light emitting device, and thecommon electrode 270 may become a cathode of the light emitting device. - A
capping layer 410 may be formed on thecommon electrode 270, and anencapsulation layer 420 may be formed on thecapping layer 410. Thecapping layer 410 may be formed over an entire surface of thecommon electrode 270 to help protect thecommon electrode 270. - The
light shielding member 500 may be formed on one surface of theencapsulation layer 420. Thelight shielding member 500 may be formed in a non-pixel area corresponding to thepixel definition layer 330 without being overlapped with the openings corresponding to the pixel. - The
light shielding member 500 may be electrically connected to aground electrode 124 c of a pad part through aground connection wiring 127, and thelight shielding member 500 may effectively shield an electromagnetic wave and static electricity generated by the organic light emitting diode display device. - Next, a second exemplary embodiment will be described with reference to
FIG. 3 . -
FIG. 3 , which illustrates a cross-sectional view taken along line A-A ofFIG. 1 , illustrates a diagram of a second exemplary embodiment. - An organic light emitting diode display device according to a second exemplary embodiment is different from the organic light emitting diode display device according to a first exemplary embodiment only in that a shielding member 510 having a rear surface light emitting structure may be used instead of the
light shielding member 500 having a front surface light emitting structure, and may have a structure of a pixel that is the same as that of the pixel of the organic light emitting diode display device according to a first exemplary embodiment. The same components will be denoted by the same reference numerals, and an overlapped description for the same components will be omitted. - In the organic light emitting diode display device according to a second exemplary embodiment,
gate electrode drain electrode - The shielding electrode may include, for example, a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed. The shielding electrode may be formed of a mixture of two or more of copper (Cu), copper nitride (CuNx), titanium (Ti), titanium nitride (TiNx), titanium oxide (TiOx), molybdenum nitride (MoNx), indium zinc oxide (IZO), and indium tin oxide (ITO).
- The shielding electrode may be electrically connected to the ground electrode of the pad part positioned outside the encapsulation layer, and the light electrode may effectively shield an electromagnetic wave and static electricity generated by the organic light emitting diode display device, similar to the
light shielding member 500. - Next, a third exemplary embodiment will be described with reference to
FIG. 4 . -
FIG. 4 , which illustrates a cross-sectional view taken along line A-A ofFIG. 1 , illustrates a diagram of a third exemplary embodiment. - An organic light emitting diode display device according to a third exemplary embodiment is different from the organic light emitting diode display device according to a second exemplary embodiment only in that it may include an upper substrate and a lower substrate formed of a rigid material such as glass, and may have a structure of a pixel that is the same as that of the pixel of the organic light emitting diode display device according to a second exemplary embodiment. The same components will be denoted by the same reference numerals, and an overlapped description for the same components will be omitted.
- As shown in
FIG. 4 , an organic light emitting diode display device according to a third exemplary embodiment may include anupper substrate 105 and alower substrate 110 facing each other. - The
upper substrate 105 and thelower substrate 110 are transparent insulation substrates formed of, for example, glass or plastic. - Buffer layers 115 may be formed at an inner side of the
upper substrate 105 and on thelower substrate 110, respectively. Thebuffer layer 115 may contain, for exmaple, silicon nitride (SiNx), silicon oxide (SiOx), or silicon oxynitride (SiOxNy), and may be formed as a single layer or a multilayer. Thebuffer layer 115 may help prevent permeation of impurities, moisture, or external air degrading characteristics of a semiconductor and planarize a surface. According to an exemplary embodiment, thebuffer layer 115 may also be positioned in theupper substrate 105 or thelower substrate 110. For example, theupper substrate 105 and thelower substrate 110 may have a structure in which polymer films (plastic layers) and the buffer layers are alternately stacked as a multilayer. - A semiconductor layer 150, a gate insulating layer (GIL), an
interlayer insulating layer 180, apassivation layer 185, and apixel electrode 190 may be formed on thelower substrate 110, as in first and second exemplary embodiments. - A
pixel definition layer 330 may be formed in the vicinity of thepixel electrode 190, and may include a plurality of openings corresponding to one pixel. Thepixel electrode 190 may be exposed in portions in which thepixel definition layer 330 is not formed, and theorganic emission layer 300 may be positioned on thepixel electrode 190. - A low reflection
opaque metal layer 230 may be formed in a non-pixel area that is not overlapped with theorganic emission layer 300 at the inner side of theupper substrate 105. The low reflectionopaque metal layer 230 may be formed in an area corresponding to an area in which thepixel definition layer 330 of thelower substrate 110 may be positioned. This may cover the opening of thepixel definition layer 330 since the opening may be an area in which the organic emission layer may emit light. - The low reflection
opaque metal layer 230 may include, for example, a copper (Cu) layer, an indium zinc oxide (IZO) layer, and a titanium (Ti) layer that are sequentially formed. The low reflectionopaque metal layer 230 may be formed of a mixture of two or more selected of copper (Cu), copper nitride (CuNx), titanium (Ti), titanium nitride (TiNx), titanium oxide (TiOx), molybdenum nitride (MoNx), indium zinc oxide (IZO), and indium tin oxide (ITO). - The low reflection
opaque metal layer 230 may be electrically connected to the ground electrode of the pad part positioned outside the encapsulation layer, and the low reflectionopaque metal layer 230 may effectively shield an electromagnetic wave and static electricity generated by the organic light emitting diode display device. - By way of summation and review, an organic light emitting diode display having self-light emitting characteristics may include two electrodes facing each other and an organic layer interposed between the two electrodes. In the organic light emitting diode display, holes injected from an anode and electrons injected from a cathode may meet each other in an emission layer to generate excitons, the excitons may emit light and may be extinguished, and light may be generated.
- An organic light emitting diode display may not require a light source unlike the liquid crystal display, and a thickness and a weight of the display panel may be decreased. An organic light emitting diode display may have desirable characteristics such as, for example, low power consumption, high luminance, and a high reaction speed. An organic light emitting diode display may also be manufactured to be bendable using a plastic substrate.
- In a display device, an electromagnetic wave harmful to the human body may be generated. To help shield the electromagnetic wave, a black matrix having improved conductivity may be used. A rigid substrate such as glass may be used, which may not be applied to a flexible display. Chrome (Cr) and chrome oxide may be used, and conductivity of a conducting wire may be decreased, which may be unfavorable in shielding an electromagnetic wave.
- Provided is an organic light emitting diode display device that may improve shielding performance of an electromagnetic wave by increasing conductivity using a conductive black matrix or a low-refractive metal.
- As set forth above, according to exemplary embodiments, shielding performance of an electromagnetic wave may be improved even in a flexible display, and the flexible device may be utilized for a wearable device closely adhered to the human body.
- A metal material having low reflection characteristics may be used in wirings of the gate electrode, the source electrode, and the drain electrode, and an electromagnetic wave shielding effect may be maximized.
- Example embodiments have been disclosed herein, and although specific terms are employed, they are used and are to be interpreted in a generic and descriptive sense only and not for purpose of limitation. In some instances, as would be apparent to one of skill in the art as of the filing of the present application, features, characteristics, and/or elements described in connection with a particular embodiment may be used singly or in combination with features, characteristics, and/or elements described in connection with other embodiments unless otherwise specifically indicated. Accordingly, it will be understood by those of skill in the art that various changes in form and details may be made without departing from the spirit and scope of the present invention as set forth in the following claims.
Claims (9)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/807,112 US10903456B2 (en) | 2015-01-15 | 2017-11-08 | Organic light emitting diode display device |
US17/137,842 US11653527B2 (en) | 2015-01-15 | 2020-12-30 | Organic light emitting diode display device |
US18/301,345 US20230255052A1 (en) | 2015-01-15 | 2023-04-17 | Organic light emitting diode display device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2015-0007457 | 2015-01-15 | ||
KR1020150007457A KR102344331B1 (en) | 2015-01-15 | 2015-01-15 | Organic light emitting diode display device |
US14/805,533 US9825259B2 (en) | 2015-01-15 | 2015-07-22 | Organic light emitting diode display device |
US15/807,112 US10903456B2 (en) | 2015-01-15 | 2017-11-08 | Organic light emitting diode display device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/805,533 Division US9825259B2 (en) | 2015-01-15 | 2015-07-22 | Organic light emitting diode display device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/137,842 Division US11653527B2 (en) | 2015-01-15 | 2020-12-30 | Organic light emitting diode display device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20180069198A1 true US20180069198A1 (en) | 2018-03-08 |
US10903456B2 US10903456B2 (en) | 2021-01-26 |
Family
ID=56408431
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/805,533 Active US9825259B2 (en) | 2015-01-15 | 2015-07-22 | Organic light emitting diode display device |
US15/807,112 Active 2035-10-16 US10903456B2 (en) | 2015-01-15 | 2017-11-08 | Organic light emitting diode display device |
US17/137,842 Active 2035-11-08 US11653527B2 (en) | 2015-01-15 | 2020-12-30 | Organic light emitting diode display device |
US18/301,345 Pending US20230255052A1 (en) | 2015-01-15 | 2023-04-17 | Organic light emitting diode display device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/805,533 Active US9825259B2 (en) | 2015-01-15 | 2015-07-22 | Organic light emitting diode display device |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/137,842 Active 2035-11-08 US11653527B2 (en) | 2015-01-15 | 2020-12-30 | Organic light emitting diode display device |
US18/301,345 Pending US20230255052A1 (en) | 2015-01-15 | 2023-04-17 | Organic light emitting diode display device |
Country Status (2)
Country | Link |
---|---|
US (4) | US9825259B2 (en) |
KR (1) | KR102344331B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110729334A (en) * | 2019-10-22 | 2020-01-24 | 京东方科技集团股份有限公司 | Electroluminescent display substrate and display device |
WO2020019371A1 (en) * | 2018-07-25 | 2020-01-30 | 武汉华星光电技术有限公司 | Reflection sheet and backlight module |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180017280A (en) | 2016-08-08 | 2018-02-21 | 삼성디스플레이 주식회사 | Organic light emitting diode display |
JP2018181578A (en) * | 2017-04-12 | 2018-11-15 | 株式会社ジャパンディスプレイ | Display device |
JP6856472B2 (en) * | 2017-07-31 | 2021-04-07 | 京セラ株式会社 | Display device |
CN110875363A (en) * | 2018-09-04 | 2020-03-10 | 京东方科技集团股份有限公司 | Array substrate, preparation method thereof and display panel |
US11476236B2 (en) * | 2018-11-07 | 2022-10-18 | Seoul Viosys Co., Ltd. | Display apparatus |
KR20200144204A (en) * | 2019-06-17 | 2020-12-29 | 삼성디스플레이 주식회사 | Display apparatus |
CN210110300U (en) * | 2019-08-16 | 2020-02-21 | 北京京东方技术开发有限公司 | Pixel driving circuit, array substrate and display device |
CN110364641B (en) * | 2019-08-20 | 2021-09-21 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
KR20210035358A (en) * | 2019-09-23 | 2021-04-01 | 삼성디스플레이 주식회사 | Display device |
CN110838509A (en) * | 2019-11-20 | 2020-02-25 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method thereof and display device |
KR20210076293A (en) | 2019-12-13 | 2021-06-24 | 삼성디스플레이 주식회사 | Display apparatus |
CN115148930A (en) * | 2022-06-28 | 2022-10-04 | 武汉华星光电半导体显示技术有限公司 | Display panel |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090045724A1 (en) * | 2005-05-25 | 2009-02-19 | Sharp Kabushiki Kaisha | Light-emitting circuit board and light-emitting display device |
US7944140B2 (en) * | 2007-07-23 | 2011-05-17 | Samsung Mobile Display Co., Ltd. | Organic light emitting display and method of manufacturing the same |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080033729A (en) | 2006-10-13 | 2008-04-17 | 삼성전자주식회사 | Liquid crystal display and method of manufacturing the same |
KR100839750B1 (en) | 2007-01-15 | 2008-06-19 | 삼성에스디아이 주식회사 | Organic light emitting display |
JP5270113B2 (en) * | 2007-06-06 | 2013-08-21 | 新日鉄住金化学株式会社 | Photosensitive resin composition for black resist, light shielding film and color filter using the same |
JP2010080224A (en) * | 2008-09-25 | 2010-04-08 | Sony Corp | Method of manufacturing optical component, and optical component, as well as method of manufacturing display device, and display device |
KR100963074B1 (en) | 2008-10-17 | 2010-06-14 | 삼성모바일디스플레이주식회사 | Organic Light Emitting Display Device |
US8690414B2 (en) * | 2009-03-18 | 2014-04-08 | Sharp Kabushiki Kaisha | Display device with light guide element overlapping peripherial display region of display panel |
KR101878878B1 (en) | 2011-09-06 | 2018-08-20 | 엘지디스플레이 주식회사 | Display Device |
KR20140064185A (en) * | 2012-11-19 | 2014-05-28 | 엘지디스플레이 주식회사 | Substrate including black matrix and method of fabricating the same |
JP6216668B2 (en) * | 2014-03-17 | 2017-10-18 | 株式会社ジャパンディスプレイ | Manufacturing method of display device |
-
2015
- 2015-01-15 KR KR1020150007457A patent/KR102344331B1/en active IP Right Grant
- 2015-07-22 US US14/805,533 patent/US9825259B2/en active Active
-
2017
- 2017-11-08 US US15/807,112 patent/US10903456B2/en active Active
-
2020
- 2020-12-30 US US17/137,842 patent/US11653527B2/en active Active
-
2023
- 2023-04-17 US US18/301,345 patent/US20230255052A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090045724A1 (en) * | 2005-05-25 | 2009-02-19 | Sharp Kabushiki Kaisha | Light-emitting circuit board and light-emitting display device |
US7944140B2 (en) * | 2007-07-23 | 2011-05-17 | Samsung Mobile Display Co., Ltd. | Organic light emitting display and method of manufacturing the same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020019371A1 (en) * | 2018-07-25 | 2020-01-30 | 武汉华星光电技术有限公司 | Reflection sheet and backlight module |
CN110729334A (en) * | 2019-10-22 | 2020-01-24 | 京东方科技集团股份有限公司 | Electroluminescent display substrate and display device |
US11910641B2 (en) | 2019-10-22 | 2024-02-20 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Electroluminescent display substrate and display device |
Also Published As
Publication number | Publication date |
---|---|
US11653527B2 (en) | 2023-05-16 |
US9825259B2 (en) | 2017-11-21 |
US20230255052A1 (en) | 2023-08-10 |
KR20160088488A (en) | 2016-07-26 |
US10903456B2 (en) | 2021-01-26 |
US20210119184A1 (en) | 2021-04-22 |
KR102344331B1 (en) | 2021-12-28 |
US20160211310A1 (en) | 2016-07-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11653527B2 (en) | Organic light emitting diode display device | |
US11908854B2 (en) | Display device | |
US11711939B2 (en) | Thin film transistor substrate | |
US10204846B2 (en) | Display device | |
US9064833B2 (en) | Organic light emitting diode display | |
US7982386B2 (en) | Organic light emitting display device with opaque electrodes | |
KR20170101097A (en) | Display device and flexible display device | |
JP6726973B2 (en) | Display device | |
KR20150012143A (en) | An organic light emitting display apparatus | |
KR20170080242A (en) | Organic light emitting diode display device | |
KR102247825B1 (en) | Bottom Emission Type Organic Light Emission Diode Display Having Color Filters And Method For Manufacturing The Same | |
US9337440B2 (en) | Organic luminescent display device | |
KR100778442B1 (en) | Organic light emitting display | |
US20240215357A1 (en) | Display device | |
US20240224661A1 (en) | Dual-side organic light emitting display device | |
KR20240065735A (en) | Display device | |
KR20240082439A (en) | Display device and method for manufacturing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: ADVISORY ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: ADVISORY ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |